19723489692 has 24 divisors (see below), whose sum is σ = 48728622096. Its totient is φ = 6187761408.

The previous prime is 19723489637. The next prime is 19723489697. The reversal of 19723489692 is 29698432791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19723489697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48341683 + ... + 48342090.

It is an arithmetic number, because the mean of its divisors is an integer number (2030359254).

Almost surely, 2^19723489692 is an apocalyptic number.

19723489692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19723489692 is an abundant number, since it is smaller than the sum of its proper divisors (29005132404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19723489692 is a wasteful number, since it uses less digits than its factorization.

19723489692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96683797 (or 96683795 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 60.

The spelling of 19723489692 in words is "nineteen billion, seven hundred twenty-three million, four hundred eighty-nine thousand, six hundred ninety-two".